Changes

==Timing structural development==

==Timing structural development==

In the [[petroleum systems]] approach to exploration, the relative timing of major events, such as trap formation, is critical. Timing of structural trap development is difficult to determine and usually must be inferred. The techniques for determining timing are often integrated with one another using sequential restored sections (by hand or computer) that either back-strip the sedimentary layers by “flattening” to their depositional surface or palinspastically restore them to pre[[deformation]]al geometries by removing displacement on the faults and unfolding the folds.<ref name=ch20r225>Nelson, R., A., Patton, T., L., Serra, S., Bentham, P., A., 1996, Delineating structural timing: Houston Geological Society Bulletin, v. 39 (1), p. 14–17. ''Timing techniques.''</ref> In simplified structural settings, isopach maps of successive stratigraphic units may be regarded as paleostructural maps.

In the [[petroleum systems]] approach to exploration, the relative timing of major events, such as trap formation, is critical. Timing of structural trap development is difficult to determine and usually must be inferred. The techniques for determining timing are often integrated with one another using sequential restored sections (by hand or computer) that either back-strip the sedimentary layers by “flattening” to their depositional surface or palinspastically restore them to geometries prior to [[deformation]] by removing displacement on the faults and unfolding the folds.<ref name=ch20r225>Nelson, R., A., Patton, T., L., Serra, S., Bentham, P., A., 1996, Delineating structural timing: Houston Geological Society Bulletin, v. 39 (1), p. 14–17. ''Timing techniques.''</ref> In simplified structural settings, isopach maps of successive stratigraphic units may be regarded as paleostructural maps.

==Determining timing==

==Determining timing==